Steam iron



I. MITZMAN STEAM IRON Nov. 19, 1935.

Filed Feb. 2, 1931 2 Sheets-Shegfc l Nov. 19, 1935. 1. MITZMAN ,0

' v STEAM IRON Filed Feb. 2, 1931 2 Sheets-Sheet 2 l HIHHII N6 M/TZMHN B ATTORNEY v of electrically heated sad iron.

Patented Nov. 19, 1935 UNITED STATES PATENT OFFICE 2 Claims.

My invention relates to sad irons of the type adapted to deliver steam through the pressing surface.

The object of my invention is to simplify irons of this type and to make more certain the delivery of dry, hot steam to the goods being pressed.

More particularly, my invention has for its ob- J'ect the localization of the steam chambers and passages in a cast metal base which is readily adapted to form a substitute base. for commercial electric irons now on the market.

A further object of my invention is to incorporate the steam passages and chambers in a one-part cast metal base by providing cored passages and eliminating the difficulties arising from a two-part base relying upon a cover to complete the passages. i

The above and further objects of my invention will be pointed out more particularly in the following claims which are directed to illustrative embodiments of the invention described in the following specification in connection with the accompanying drawings which form a part hereof.

In the drawings, Fig. 1 is a perspective view of I my improved steam base; Fig. 2 is a horizontal section through the same; Fig. 3 is a vertical longitudinal section through the same; Fig. 4 is a cross-section illustrating the valve control mechanism; and Fig. 5 is a perspective view of a modification.

In the patent to L. Hoffman for Sadiron, No. 1,241,216 granted September 25, 1917 is shown an electrically heated steam iron of the type for which my improved base is adapted. The general construction of electrically heated sad irons is so well known and corresponds so well with that of the Hoffman patent cited that I consider it unnecessary to illustrate in detail other than my improvements, it being understood that my improved base adapts itself to any commercial form In the drawings, A is a. cast metal base preferably of brass, the undersurface l of which is polished and preferably nickel plated, and provides perforations 2 through which it is an object of the invention to eject dry steam at will.-

3 is a nipple cast is adapted to be fitted with a connection from a permanent supply of steam and which leads to super-heating chamber or passage 4 adapted constantly to be maintained in connection with the steam supply, its exit end being maintained clbsed by the manually controlled valve 18 in the integral with the base which cross-duct system C. The valve B discharges into the perforated steam delivery set of ducts D directly connected with the perforations 2.

In the construction of my base suitable cores employed during the casting form the passages 5 4, 5, 6, 1, 8 and 9, undesired openings inthe castings being closed by screw-threaded plugs such as In, H, l2, l3 and I4. -It is to be understood that the electrical heating element, as

is customary, d rectly overlies the top surface 10 I5 and that the ledge l6 provides for the seating'of the usual covering shell while the usual assembly bolts l8 and I!) are provided for securing the shell and other parts of the iron to the base A.

By reason of the localization of the steam chambers and passages in my new base, it is unnecessary for me to impair the heat storing functioning or the heat insulating functioning of the parts going to make up a commercial elec- 20 trically heated iron while in addition I insure the delivery of dry steam through the steam perforations 2. An important provision insuring this is the provision of the steam chamber or passage 4 directly in the hot base of the iron which automatically heats up the steam led to it through the nipple 3 so that only dry steam can be discharged upon the goods being pressed through the perforations upon the opening of the .valve B. Even when the iron is in more nearly continuous use, the steam entering through the nipple 3 is first super-heated through-the passage 4 before it is possible for it to reach the passages provided with the perforations 2. v

In the modification of Fig. 5 the steam iscaused to traverse a second super-heater passage 40 before entering the perforated discharge passages 60, 10- and 80.

What I claim and desire to secure by United 40 States Letters Patent is:

1. A replacement base for converting a standard electric sadiron into an electrically operated steam iron, comprising a single cored one-piece base casting presenting a lower integral pressing surface, said casting having an upper configuration to fit a standard casing and providing within itself a set of cored tubular cross-ducts cast in said base parallel to said pressing surface. and steam perforations extending through said pressing surface to said ducts; a second tubular super-heating chamber cast in said base parallel to. said pressing surface; an upstanding valve-controlled cross connection between said super-heating chamber and said c'ro'ssducts; and a steam intake connection for sup-' 2. An electrically heated sadlron comprising a plying steam under pressure constantly to said base having a bore therein extending forwardly super-heating chamber, whereby substantially from its butt end, a second bore inv communicathe unaltered assemblage ot a standard electrition with said bore, a third bore connected to 5 cally heated sadiron may be converted into a second bore by a e, and outlet es in I steam sadiron by the substitution of said base said third bore. member. I IRVING MITZMAN. 

